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<DIV><FONT face=Arial size=2>Some more feedback on the subject of large queues
building up. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>We have been running mailscanner with exim for 11
days. During most of this time delay for local domains were very low > 2
minutes on average (servicing around 20,000 messages daily). Yesterday
afternoon we configured two Exchange machines to use the mailscanner
box as their smarthost. These machine typically send combined between 6000-8000
MIME mail items daily. After adding these machines the size of the
incoming queue climbed dramatically > 3000 so that by 6pm items
were taking 1.5 hours to be delivered The outgoing queue never had more than 200
messages waiting. The machine is a dual processor Sunblade 1000 and
the load average never climbed above 0.5. The performance
degradation didn't seem directly proportional to message throughout.
This morning these delays were still
happening so reading through the mailing list I decided to
change the delivery method from batch to queue and deliver in background to
yes.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The queues very rapidly decreased and I am back to
less that 2 minutes delay for mail to local domains; which I am happy with.
system load averages are still less that 0.5 ;-)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Mailscanner settings are:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Version 3.04</FONT></DIV>
<DIV><FONT face=Arial size=2>running virus scanning but no spam checking at all.
(I am very wary of all the DNS checks that are involved and RBL checks are done
by exim anyway). </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Regards</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Ray Gardener</FONT></DIV>
<DIV><FONT face=Arial size=2>Sheffield Hallam University</FONT></DIV>
<DIV><FONT face=Arial size=2>CIS </FONT></DIV>
<DIV><FONT face=Arial size=2>0114 225 4926</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
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